static void Main(string[] args)
{
var office = new Office();
Person.CameEvent += office.OnCame;
Person.LeftEvent += office.OnLeft;
var john = new Person("Джон");
john.Came(10.05);
var bill = new Person("Билл");
bill.Came(12.50);
var hugo = new Person("Хьюго");
hugo.Came(17.10);
john.Left();
bill.Left();
hugo.Left();
Console.ReadKey();
}